SIST EN ISO 20643:2008/A1:2013

Mechanical vibration - Hand-held and hand-guided machinery - Principles for evaluation of vibration emission - Amendment 1: Accelerometer positions (ISO 20643:2005/Amd 1:2012)

This document provides the basis for the drafting of vibration test codes for hand-held and hand-guided powerdriven machinery. It specifies the determination of hand-transmitted vibration emission in terms of frequencyweighted root-mean-square (r.m.s.) acceleration during type testing. For machines where vibration test codes do not exist, it may also be used for determination of emission values and contains sufficient guidance for designing an appropriate test. NOTE Vibration test codes based on this document should define measuring procedures which provide controlled, repeatable and reproducible results which are, as far as possible, in agreement with the vibration values measured at the machine-hand contact surfaces under real working conditions and for which the uncertainties of measurement are quantified. This document is applicable to hand-held power tools (e.g. chipping hammers, sanders), hand-guided powered machines (e.g. lawn mowers, single-axle tractors, vibratory rollers) and other types of powered machines fitted with handles, guiding beams or similar means of control. It is applicable to machinery of all power sources (electrical, hydraulic, pneumatic, internal combustion engine, etc.). It does not apply to fixed machinery in which the vibration is transmitted to the hands of the user through the workpiece. This document is not applicable to vibration transmitted from steering wheels or control levers of mobile machinery where the operator's position is on the machine, see EN 1032. It is restricted to translational vibration measured in three orthogonal directions at the hand-machine interface. This document should be applied with caution to machines producing single and repetitive shocks with a frequency of occurrence lower than 5 Hz. For such machines, it is not known whether frequency-weighted root-mean-square acceleration values are related to the risks to health and additional measurements may be required. When developing vibration test codes for such machines the information in CEN ISO/TS 15694 should be considered. This document is not applicable to vibration test codes published before the date of publication of this document by CEN and, when used as test code, to hand-held and hand-guided machinery manufactured before that date. This document does not present limits or recommended vibration values. It does not give any guidance or recommendations for determination of human exposure to vibration at the workplace. For such information, reference is made to EN ISO 5349-1 and EN ISO 5349-2.

Mechanische Schwingungen - Handgehaltene und handgeführte Maschinen - Grundsätzliches Vorgehen bei der Ermittlung der Schwingungsemission - Änderung 1 (ISO 20643:2005/Amd 1:2012)

Vibration mécanique - Machines tenues et guidées à la main - Principes pour l'évaluation d'émission de vibration - Amendement 1: Position des accéléromètres (ISO 20643:2005/Amd 1:2012)

Mehanske vibracije - Prenosni ročni in ročno vodeni stroji - Načela vrednotenja oddajanja vibracij - Dopolnilo 1: Položaji merilnika pospeškov (ISO 20643:2005/Amd 1:2012)

Ta dokument podaja osnovo za pripravo osnutkov preskusnih številk vibracij za prenosne ročne in ročno vodene stroje s pogonsko enoto. Določa ugotavljanje oddajanja vibracij, ki se prenašajo na roke, glede na efektivno vrednost (r.m.s.) frekvenčno uravnoteženega pospeška med preskušanjem. Pri strojih, ki nimajo preskusnih številk vibracij, se lahko uporabi tudi za ugotavljanje količine oddajanja, pri čemer vsebuje tudi zadostna navodila za načrtovanje primernega preskusa. OPOMBA Preskusne številke vibracij, ki temeljijo na tem dokumentu, naj bi opredelile merilne postopke, ki zagotavljajo nadzorovane in ponovljive rezultate, ki so v največji meri skladne s količino vibracij, ki se izmeri na površinah, kjer se stikata roka in stroj, ter so pridobljene pod resničnimi delovnimi pogoji, pri čemer so za njih opredeljene spremenljivosti merjenja. Ta dokument se uporablja za prenosna ročna orodja (npr. razbijalna kladiva, brusilniki), ročno vodene stroje (npr. kosilnice, enoosni traktorji, vibracijske valjarje) in druge vrste strojev s pogonsko enoto, ki imajo nameščene ročaje, vodilne žarke ali podobne načine upravljanja. Uporablja se za stroje, ki uporabljajo vse vire energije (električne, hidravlične, pnevmatične, motorje z notranjim izgorevanjem idr.). Ne uporablja se za pritrjene stroje, pri katerih se vibracije na roke uporabnika prenašajo prek obdelovanca. Ta dokument se ne uporablja za vibracije, ki se prenašajo prek volanov ali kontrolnih vzvodov mobilnih naprav na mestu za upravljavca stroja, (glej standard EN 1032). Omejen je na prevodne vibracije, ki se izmerijo v treh pravokotnih smereh na vmesniku ročnega stroja. Pri uporabi tega dokumenta je potrebna posebna pazljivost pri strojih, ki proizvajajo enotne in ponovljive sunke s pogostostjo ponavljanja, ki je nižja od 5 Hz. Pri takih strojih ni znano, ali so efektivne vrednosti frekvenčno uravnoteženega pospeška povezane z zdravstvenimi tveganji, zato so potrebne dodatne meritve. Pri razvijanju testnih številk vibracij za te stroje je treba upoštevati informacije v standardu CEN ISO/TS 15694. Ta dokument se ne uporablja za testne številke vibracij, ki so bile objavljene, preden je odbor CEN izdal ta dokument, ter za prenosne ročne in ročno vodene stroje, ki so bili izdelani pred tem datumom in kadar se uporabljajo kot preskusne številke. Ta dokument ne predpisuje omejitev ali priporočenih vrednosti vibracij. Ne podaja navodil ali priporočil za ugotavljanje človekove izpostavljenosti vibracijam na delovnem mestu. Za navedene informacije se

General Information

• Status: Published
• Public Enquiry End Date: 24-Sep-2010
• Publication Date: 26-Nov-2012
• ICS: 13.160 - Vibration and shock with respect to human beings
• ICS: 25.140.01 - Hand-held tools in general
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 20-Nov-2012
• Due Date: 25-Jan-2013
• Completion Date: 27-Nov-2012
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 98/37/EC - Machinery
• Mandate: M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: EN ISO 20643:2008/A1:2012 - Mechanical vibration - Hand-held and hand-guided machinery - Principles for evaluation of vibration emission - Amendment 1: Accelerometer positions (ISO 20643:2005/Amd 1:2012)

Relations

• Amends: SIST EN ISO 20643:2008 - Mechanical vibration - Hand-held and hand-guided machinery - Principles for evaluation of vibration emission (ISO 20643:2005)
• Effective Date: 22-Dec-2008

Overview

SIST EN ISO 20643:2008/A1:2013 is a crucial European and international standard focused on evaluating mechanical vibration emissions from hand-held and hand-guided machinery. This amendment (Amendment 1) specifically updates the principles for measuring vibration by refining the accelerometer positions used during testing. Originally based on ISO 20643:2005, this 2012 amendment optimizes measurement locations to enhance accuracy and consistency in vibration emission assessments.

Produced by CEN in collaboration with ISO Technical Committees, the standard aligns with EU Directive 2006/42/EC on machinery safety requirements, ensuring manufacturers and safety regulators adhere to harmonized vibration measurement protocols. With a key focus on hand-transmitted vibration, the standard supports improved user safety and compliance across Europe and worldwide.

---

Key Topics

• Vibration Measurement Principles
  Defines standardized methods for measuring vibration magnitudes using triaxial accelerometers. Measurements capture frequency-weighted acceleration values (m/s²) along x, y, and z axes relative to hand grip positions.

• Accelerometer Positions
  Specifies precise locations on the machine handles or grips where accelerometers are mounted. Key positions include:

  • "Hand-grip" position where the hand grips a cylindrical handle
  • "Flat palm" position pressing down on spherical grips
    The accelerometer must be rigidly mounted close to the grip surface to avoid altering tool vibration or operator grip behavior.

• Measurement Conditions
  Emphasizes testing with skilled operators to reflect real-world tool handling. Measurements should typically be simultaneous on dual handles, if present. Detailed working procedures must simulate typical tasks to enable reproducibility.

• Instrumentation Requirements
  Mandates compliance with ISO 8041 for vibration measurement instrumentation, ensuring transducers are sensitive and light enough to avoid measurement distortion. Proper mounting techniques and filtering methods are discussed to address impulsive vibration typical in pneumatic tools.

• Combination of Vibration Directions
  Introduces mathematical methods to calculate total vibration magnitude by combining frequency-weighted RMS acceleration values from multiple measurement axes.

---

Applications

This standard is widely applied in industries where vibration exposure from hand-held machinery poses health risks, including:

• Power Tool Manufacturing
  Providing guidelines to assess and limit vibration emissions for tools like drills, chipping hammers, grinders, and saws, thus helping manufacturers design safer and ergonomic equipment.

• Occupational Health and Safety
  Enabling regulators and employers to evaluate vibration exposure levels under realistic operating conditions to prevent vibration-induced injuries such as Hand-Arm Vibration Syndrome (HAVS).

• Testing Laboratories
  Facilitating consistent test protocols and reporting standards to ensure reliable vibration emission data across different products and manufacturers.

• Machine Safety Compliance
  Supporting manufacturers to fulfill essential requirements of EU machinery safety directives for market access within the European Economic Area.

---

Related Standards

• ISO 8041 – Human response to vibration: Defines specifications for instruments used in vibration measurement critical to SIST EN ISO 20643:2008/A1:2013 compliance.

• ISO 5349-1 and ISO 5349-2 – Hand-transmitted vibration: Guidance on health effects and measurement techniques in occupational environments complementing vibration emission evaluation.

• EU Directive 2006/42/EC – Machinery: The legal framework that EN ISO 20643 supports by harmonizing machinery safety and vibration measurement standards.

• ISO 20643:2005 – The base standard this amendment modifies, establishing general principles for vibration emission evaluation.

---

Keywords: Mechanical vibration, hand-held machinery, hand-guided tools, vibration emission evaluation, accelerometer positions, frequency-weighted acceleration, vibration measurement standards, occupational health, EU machinery directive, vibration testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2013
0HKDQVNHYLEUDFLMH3UHQRVQLURþQLLQURþQRYRGHQLVWURML1DþHODYUHGQRWHQMD
RGGDMDQMDYLEUDFLM'RSROQLOR3RORåDMLPHULOQLNDSRVSHãNRY,62
$PG
Mechanical vibration - Hand-held and hand-guided machinery - Principles for evaluation
of vibration emission - Amendment 1: Accelerometer positions (ISO 20643:2005/Amd
1:2012)
Mechanische Schwingungen - Handgehaltene und handgeführte Maschinen -
Grundsätzliches Vorgehen bei der Ermittlung der Schwingungsemission - Änderung 1
(ISO 20643:2005/Amd 1:2012)
Vibration mécanique - Machines tenues et guidées à la main - Principes pour l'évaluation
d'émission de vibration - Amendement 1: Position des accéléromètres (ISO
20643:2005/Amd 1:2012)
Ta slovenski standard je istoveten z: EN ISO 20643:2008/A1:2012
ICS:
13.160 Vpliv vibracij in udarcev na Vibration and shock with
ljudi respect to human beings
25.140.01 5RþQDRURGMDQDVSORãQR Hand-held tools in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 20643:2008/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2012
ICS 25.140.01; 13.160
English Version
Mechanical vibration - Hand-held and hand-guided machinery -
Principles for evaluation of vibration emission - Amendment 1:
Accelerometer positions (ISO 20643:2005/Amd 1:2012)
Vibration mécanique - Machines tenues et guidées à la Mechanische Schwingungen - Handgehaltene und
main - Principes pour l'évaluation d'émission de vibration - handgeführte Maschinen - Grundsätzliches Vorgehen bei
Amendement 1: Positions de l'accéléromètre (ISO der Ermittlung der Schwingungsemission - Änderung 1
20643:2005/Amd 1:2012) (ISO 20643:2005/Amd 1:2012)
This amendment A1 modifies the European Standard EN ISO 20643:2008; it was approved by CEN on 14 July 2012.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20643:2008/A1:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .4

Foreword
This document (EN ISO 20643:2008/A1:2012) has been prepared by Technical Committee ISO/TC 118
"Compressors and pneumatic tools, machines and equipment" in collaboration with Technical Committee
CEN/TC 231 “Mechanical vibration and shock” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by January 2013, and conflicting national standards shall be withdrawn at
the latest by January 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 20643:2005/Amd 1:2012 has been approved by CEN as a EN ISO 20643:2008/A1:2012
without any modification.
Annex ZA
(informative)
Relationship between this European Standard and
the Essential Requirements of EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide one means of conforming to Essential Requirements of
the New Approach Directive 2006/42/EC on machinery.
When this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the normative clauses of
this standard confers, within the limits of the scope of this standard, a presumption of conformity with Essential
Requirement(s) of that Directive and associated EFTA regulations.
WARNING Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard.

INTERNATIONAL ISO
STANDARD 20643
First edition
2005-01-15
AMENDMENT 1
2012-07-15
Mechanical vibration — Hand-held and
hand-guided machinery — Principles for
evaluation of vibration emission
Amendment 1: Accelerometer positions
Vibration mécanique — Machines tenues et guidées à la main —
Principes pour l’évaluation d’émission de vibration
Amendement 1: Positions de l’accéléromètre
Reference number
ISO 20643:2005/Amd.1:2012(E)
©
ISO 2012
ISO 20643:2005/Amd.1:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 20643:2005/Amd.1:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO 20643:2005 was prepared by Technical Committee ISO/TC 118, Compressors and
pneumatic tools, machines and equipment, Subcommittee SC 3, Pneumatic tools and machines.
This amendment mainly concerns the subclauses 6.2, 6.4 and 7.2, regarding the accelerometer positions. I
...